h a l f b a k e r yAssume a hemispherical cow.
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Inside the safe you have fake gold and silver worth only a
few
cents. The alarm outside the safe has wires connected to a
seemingly elaborate digital system with blinking LED lights,
another few cents worth. To the side of the system there a
few cut dusty electric wires. That's where the gold
is
hidden.
Nanotube Conductivity
http://www.nanocomp...rbon-nanotubes.html
This link rates carbon nanotubes far far above copper --and therefore above silver, too. [Vernon, Mar 20 2013]
Copper Nanotubes
http://www.chm.bris...cules/copperNTs.pdf
[bs0u0155, Mar 21 2013]
Iodine-laced Copper Nanotubes
http://www.nature.c...full/srep00083.html
[bs0u0155, Mar 21 2013]
[link]
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A recent spate of burglaries around London have, it would seem, been targeted at the Indian community who often tend to hold family gold. |
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The bugulars wait until the house is empty and then get in fast and use metal detectors to locate and steal any hidden gold and jewelry, leaving behind more traditional booty such as computers, and consumer electronics. |
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A decoy tactic might slow such a raid down - but it might be better to invest in a strong safe - or series of safes perhaps - only one of which contains the real loot. |
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Thanks for telling us where your gold is...muwahahaha... |
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Gold is a good electrical conductor, but not so
good that electrically-better alternatives don't get
used. The best metal conductor is silver. Then
copper. Then aluminum. Gold is 4th-best.
(Sometime I have to find out where carbon
nanotubes rate on the scale; they may be about as
good as copper and aluminum.) |
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Gold is used in electronics a lot, but almost
exclusively for a single purpose: It is used at the
point where Connector A and Connector B need to
connect. That's because gold has the best
corrosion-resistance of the electrical conductors.
So, the electrical connection does not deteriorate
with time. |
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Unfortunately for this Idea, that means that the
gold would be plainly visible in any UNconnected
fake connector.... |
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//Thanks for telling us where your gold is |
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Ahh, the cunning double-bluff. I'm sure pashute made the safe out of gold and painted it. |
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Carbon nanotubes are very good conductors, if
they
are conductive. Only certain chiralities are, only
end
to end, and only single wall nanotubes. Of course
this actually makes them very interesting for
electronics, becomes some chiralities are efficient
semi-conductors. |
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Something like a nanotube yarn typically ends up
being a
very
poor conductor over it's length because the ends
typically don't join up. |
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As far as gold, it has a couple advantages that
would make it much more common in use if it
were cheaper. The first is the non-corroding
thing, which means that contacts and terminals
stay clean, and the second is the low coefficient
of expansion which means contacts are less likely
to work loose (the primary reason you don't see
aluminum wiring much these days). |
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It's also insanely maleable and would probably make really good flexible wires. |
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It's weight-to-conductivity ratio (or rather weight-to-resistivity inverse ratio) would likely be bad however. |
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//Carbon nanotubes are very good conductors, if
they are conductive.// Ah, but what about the
infamously-named copper nanotubes? |
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The Police have their own nanotube network? |
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it seems copper nanotubes <link> exist, however
carbon nanotubes can exceed the
conductivity of metals when properly treated <link>. |
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